/* ===================

AX2E (AXESCON XACML 2.0 Engine) is the Java authorization engine, which implements OASIS XACML 2.0 standard.
Copyright (C) 2007 AXESCON LLC

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA


Contact: AXESCON LLC - info{at}axescon.com

 =================== */
package axescon.xacml.api;

import axescon.xacml.model.policy.AttributeValue;

/**
 * @author argyn kuketayev
 *         Date: Sep 28, 2005
 *         Responsibilities: represents a function, which can be used in MatchId
 *         for matching target elements.
 */
public interface MatchFn extends Fn {
    /**
     * @param arg0
     * @param arg1
     * @return true, if arguments match according to the func's spec
     * @throws ExpressionEvalIndeterminateException
     *
     */
    boolean match(AttributeValue arg0, AttributeValue arg1) throws ExpressionEvalIndeterminateException;

    /**
     * @param fnFactory factory which is used if this function needs
     *                  to use other functions
     */
    void setFnFactory(FnFactory fnFactory);
}
